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The AAPG/Datapages Combined Publications Database
Showing 3,040 Results. Searched 200,639 documents.
Alluvial to Marine Facies Transition in the Antler Overlap Sequence, Pennsylvanian and Permian of North-Central Nevada
Arthur H. Saller , William R. Dickinson
Journal of Sedimentary Research (SEPM)
... are distinctly separated from the conglomerates by abrupt contacts. Calcified root casts are found at the top of some o the sandstone interbeds. Iron oxides...
1982
Ralston Formation of Canon City Embayment, Colorado
E. A. Frederickson , John M. De Lay , Weldon W. Saylor
AAPG Bulletin
...) of Wyoming, indicating that beds below the top of the Crinkled limestone are probably older than Triassic. Girty (1912) and Butters (1913, p. 84...
1956
Recognition of Barrier Environments
David K. Davies , Frank G. Ethridge , Robert R. Berg
AAPG Bulletin
... accretion of the barrier during stationary sea level. The vertical sequence of sedimentary features from bottom to top of the island...
1971
Geochemistry of Ordovician and Silurian Black Shales, Cantabrian Zone, Asturias and Leon Provinces, Northwest Spain; #50529 (2011)
Frank Maio, Carlos Aramburu, and John Underwood
Search and Discovery.com
... Luna, the top few meters of the Barrios Formation, known as “Luna Quartzite”, could represent another formation of Upper Ordovician? to Lower Silurian...
2011
Impact of Organic Fabrics, Thermal Maturity, Saturation and Diagenesis on Shale Rock Properties
Claudio Delle Piane, Ben Clennell, Matthew Josh, Dave Dewhurst
Unconventional Resources Technology Conference (URTEC)
... in the section with the highest organic content around Y000-Y200m (Figure 3). The lean shales at the top of the section and carbonates at the base are much more...
2019
FISH PREDATION ON A MEDITERRANEAN ECHINOID: IDENTIFICATION AND PRESERVATION POTENTIAL
DIEDRICH SIEVERS, JAMES H. NEBELSICK
PALAIOS
... tissues still intact and spines in situ (Fig. 4A, 4G). PA L A I O S FISH PREDATION ON A MEDITERRANEAN ECHINOID 51 FIG. 5.—Likely predator species...
2018
QUANTIFYING THE DIGESTIVE FINGERPRINTS OF PREDATORS ON THE BONES OF THEIR PREY USING SCANNING ELECTRON MICROSCOPY
REBECCA C. TERRY, JESSE A. LANEY, SAMUEL H. HAY-ROE
PALAIOS
... derived from owl pellets are typically characterized by intact bones with high representation of gracile skeletal elements such as the radius, ulna...
2018
Paleoecologic analysis of edrioasteroid (Echinodermata) encrusted slabs from the Chesterian (Upper Mississippian) Kinkaid Limestone of southern Illinois
René A. Shroat-Lewis, Emily N. Greenwood, Colin D. Sumrall
PALAIOS
... at the base, the Cave Hill Shale Member in the middle, the Goreville Limestone Member, and Grove Church Shale Member at the top (Weibel et al. 1993...
2019
Deformed displacive halite crystals: Diagenetic or tectonic origin?
Christoph Leitner, Robert Marschallinger, Konstantin Huber
Journal of Sedimentary Research (SEPM)
... several hundreds of meters in the depocenters and interfinger at the top with evaporites of the Alpine Haselgebirge Formation (Krainer 1993...
2021
Thoughts on Overthrust Faulting in a Layered Sequence
P. E. Gretener
CSPG Bulletin
... load (UL) is directly proportional to the stratigraphic displacement. Uneroded load assumes that the thrust sheet remains essentially intact during...
1972
Deformation in Ramp Regions of Overthrust Faults: Experiments with Small-Scale Rock Models
James Morse
Wyoming Geological Association
... to the plane of the diagram) is 3 cm. The sandstone layer and the two-layer limestone unit are each 0.4 cm thick. The top and bottom surfaces fot he...
1977
Engineered Approach for Multi-Well Pad Development in Eagle Ford Shale
Kush Gakhar, Dan Shan, Yuri Rodionov, Raj Malpani, E. A. Ejofodomi, Jian Xu, Kevin Fisher, Karsten Fischer, Adrian Morales
Unconventional Resources Technology Conference (URTEC)
... mechanical parameters describing the intact rock, this approach requires strength parameters and the shear and normal stiffness of the natural fractures...
2016
Porosity and mineralogy in the Lajas tight gas sandstone reservoir, Neuquén Basin, Argentina
Nathan Lavauzelle, Marja Siitari-Kauppi, Paul Sardini, Didier Loggia, Juuso Sammaljärvi, Daniel Beaufort, Ana Laura Rainoldi, Daniel Minisini
Journal of Sedimentary Research (SEPM)
..., with a piece of aluminum foil inserted between the two. Lead weights were placed on top of each sample to improve its contact with the film. The ensemble...
2025
Impacts of Geochemical Properties on Wettability of Kerogen and Organic-rich Mudrocks
Archana Jagadisan, Zoya Heidari
Unconventional Resources Technology Conference (URTEC)
... is placed on top of the stage which is filled with the fluid of interest. An illumination source and a camera are integrated with the goniometer behind...
2018
An Integrated Approach of CO2 Injection and Storage Assessment in Tight Gas Condensate Carbonate Reservoir, Case Study: Central Kalimantan, Indonesia
Andi Magfirah, Ricko Rizkiaputra, Ahmad Reizky Azhar, Jeres Rorym Cherdasa
Indonesian Petroleum Association
... (>3 million psi Young’s Modulus) and behaves as an intact structure until the end of the injection period. Overall, this study of CO2 Injection...
2022
Analysis of Well Interference in Delaware Basin: A Physics-Based and Data-Driven Approach
Esmail Eltahan, Shayan Tavassoli, Brian Casey, Guinevere McDaid, Emery Goodman
Unconventional Resources Technology Conference (URTEC)
... intact, whereas the right wing can be compromised. In the case of no damage, the right and left wings are assumed to be symmetric with no damage imposed...
2021
Shallow, Subsurface Growth and Burial Alteration of Middle Devonian Calcite Concretions
George R. Dix, Henry T. Mullins
Journal of Sedimentary Research (SEPM)
... (Figs. 1 and 2). Concretions were removed intact so that detailed subsamples could be taken across a sawn plane. Field observations of concretions...
1987
Authigenic Quartz Microfabrics in Cretaceous Turbidites: Evidence for Silica Transformation Processes in Sandstones
James P. Hendry , Nigel H. Trewin
Journal of Sedimentary Research (SEPM)
... of sandstone cemented by Ca2 (top, dull CL) and Cad, (bottom, moderate CL); Ca4 region contains lepispheres replaced by Ca5 (bright CL). These are present...
1995
Rock-Avalanche Elements of the Shadow Valley Basin, Eastern Mojave Desert, California: Processes and Problems
S. Julio Friedmann
Journal of Sedimentary Research (SEPM)
...) intact glide b ocks are exposed in transverse and longitudinal cross sections intercalated with various sedimentary and volcanic facies. Many of them have...
1997
Processes of Sedimentation on a Lacustrine Border-Fault Margin: Interpretation of Cores from Lake Malawi, East Africa
John T. Wells , Christopher A. Scholz , Michael J. Soreghan
Journal of Sedimentary Research (SEPM)
... rip-up clasts of mud, and medium sand at the top. Although sharp, basal contacts have an uneven appearance characteristic of sole marks. Rock fragments...
1999
Evaluation of the compositional changes during flooding of reactive fluids using scanning electron microscopy, nano-secondary ion mass spectrometry, x-ray diffraction, and whole-rock geochemistry
Udo Zimmermann, Merete Vadla Madland, Anders Nermoen, Tania Hildebrand-Habel, Silvana A. R. Bertolino, Aksel Hiorth, Reidar I. Korsnes, Jean-Nicolas Audinot, and Patrick Grysan
AAPG Bulletin
..., sylvite, and pyrite resulting from SEM and XRD studies. Most of the calcite derives from dispersed or intact coccoliths (Figure 2). The EDS analyses...
2015
Wettability of Mississippian Barnett Shale samples at different depths: Investigations from directional spontaneous imbibition
Zhiye Gao, and Qinhong Hu
AAPG Bulletin
... into rectangular prisms, and all sides (except the top and bottom) were coated with quick-cure transparent epoxy to avoid condensation and evaporation...
2016
Quantitative assessment of karst pore volume in carbonate reservoirs
Fermín Fernández-Ibáñez, Paul J. Moore, and Gareth D. Jones
AAPG Bulletin
..., including the top and base of the LCZ, maximum rate of losses, and cumulative lost volume for the zone. We then analyze wellbore images and caliper...
2019
Ouachita Problems
C. W. Tomlinson
Ardmore Geological Society
... along intact as its basal member. Contrast also the relatively flat-lying position of those thrust masses with the sharp folds and steep dips...
1959
GIANTS AMONG MICROMORPHS: WERE CINCINNATIAN (ORDOVICIAN, KATIAN) SMALL SHELLY PHOSPHATIC FAUNAS DWARFED?
BENJAMIN F. DATTILO, REBECCA L. FREEMAN, WINFRIED S. PETERS, WILLIAM P. HEIMBROCK, BRADLEY DELINE, ANTHONY J. MARTIN, JACK W. KALLMEYER, JESSIE REEDER, ANNE ARGAST, REBECCA L. FREEMAN, WINFRIED S. PETERS, WILLIAM P. HEIMBROCK, BRADLEY DELINE, ANTHONY J. MARTIN, JACK W. KALLMEYER, JESSIE REEDER, ANNE ARGAST
PALAIOS
... DATTILO ET AL. FIG. 8.—Cartoon showing how progressive ontogenetic occlusion (A–E) of the apex of the shell cavity affects the shape of the steinkern. Top...
2016